How do I make my C3500 air conditioning colder?

For starters, use a sun-blocking shade in the windshield while you’re parked, or look for a shady parking spot. Closing all the passenger vents in your car can help redirect cold air toward you, cooling you off faster. Still need more chill? Head to Firestone Complete Auto Care for an A/C performance check and recharge.

Why do I get hot air from my C3500 A/C?

If your car’s air conditioning isn’t blowing cold air at all (or it tries, then turns warm), you could have a clogged expansion valve, a faulty compressor clutch, a leak, or a malfunctioning fuse in the system.

How does my A/C system get a leak?

To put it simply, age and moisture are some of the main causes of leaks in your A/C. Over time, rubber gaskets and seals can wear out, which pushes much-needed refrigerant out of your C3500’s A/C system — and lets outside moisture get in, which can take a toll on internal A/C components.

Does the A/C in my C3500 use gas?

Your C3500’s A/C uses some power from the engine to run. So, while your air conditioning system may not directly use gasoline as a fuel source, using the A/C can indirectly affect your vehicle’s fuel efficiency.

My C3500’s A/C smells like vinegar! What can cause that?

If the air conditioning in your C3500 smells like vinegar, it could be due to bacteria growth on system components such as the evaporator and heater cores. Bacteria can grow when moisture accumulates on air conditioning system components, providing a breeding ground for microorganisms.

Why won’t my C3500’s A/C cool the vehicle when the car is stopped?

There could be issues with one or more components in the air conditioning or electrical system. Your C3500 may have a faulty cooling fan or low refrigerant.

Who repairs C3500 A/C near me?

Firestone Complete Auto Care inspects and repairs C3500 air conditioning systems. Book an appointment at one of our A/C repair shops near you today.

1990 GMC C3500 A/C Repair Near You

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Schedule an A/C Service Appointment for Your GMC C3500

Chill out. Our technicians are trained to inspect and repair 1990 GMC C3500 A/C systems. Stop by today to enjoy some free air conditioning and an A/C performance check.

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GMC C3500 A/C Repair

When you get in the car on a hot summer day, the last thing you want is a broken air conditioner. Your steering wheel feels like lava. That puddle in the driver’s seat? Sweat. Ugh. You take a deep breath and ask yourself, “Who can fix my GMC C3500 A/C?” Easy — Firestone Complete Auto Care! We know GMC vehicles, and our qualified technicians can diagnose and service the A/C system in your 1990 GMC. Bring your GMC C3500 to your local Firestone Complete Auto Care

During this initial A/C performance check, we’ll look at the state of your 1990 GMC C3500’s A/C system to see if repair work is required. This check includes a visual inspection, performance test, and pressure and leak test. If we suspect a leak, we’ll send a U/V dye through your A/C system or use a “sniffer” to find the leak. A "sniffer" is a machine that's run along parts of your GMC C3500 A/C system that can detect any refrigerant fumes that might be leaking out from the system. If there's a leak, we'll find it and fix it.

C3500 A/C Recharge

Let's say we repair your 1990 GMC C3500 A/C system. We will also perform an A/C evacuation and recharge. During this process, a technician will remove the old refrigerant from the A/C system. Then, they’ll perform an evacuation (also known as a discharge) on the entire system per GMC guidelines. The A/C system is recharged with new refrigerant and after one final test to be sure the system is cooling properly, you’re good to go. Our technicians are trained to efficiently perform 1990 GMC C3500 A/C recharges.

Troubleshooting GMC C3500 A/C Problems

Warm air isn't the only GMC C3500 A/C problem you may encounter. Another common A/C problem is weak airflow, which could be caused by mold or mildew buildup, a loose hose, an old ventilation fan, or a compromised seal. If you notice that your A/C system’s air is cold at first, then quickly goes warm, this may be due to a clogged expansion valve, faulty compressor clutch, blown fuse, or leak. What about those (somewhat unpleasant!) smells coming through the A/C vents in your 1990 GMC C3500? You could have a moldy evaporator case, or you may simply need a new cabin air filter installed. Technicians at Firestone Complete Auto Care are ready to help you address your A/C problems. Don’t sweat it — we’re here to help you chill out again in your C3500.

Frequently Asked Questions for 1990 GMC C3500 A/C Systems

How do I make my C3500 air conditioning colder? For starters, use a sun-blocking shade in the windshield while you’re parked, or look for a shady parking spot. Closing all the passenger vents in your car can help redirect cold air toward you, cooling you off faster. Still need more chill? Head to Firestone Complete Auto Care for an A/C performance check and recharge.
Why do I get hot air from my C3500 A/C? If your car’s air conditioning isn’t blowing cold air at all (or it tries, then turns warm), you could have a clogged expansion valve, a faulty compressor clutch, a leak, or a malfunctioning fuse in the system.
How does my A/C system get a leak? To put it simply, age and moisture are some of the main causes of leaks in your A/C. Over time, rubber gaskets and seals can wear out, which pushes much-needed refrigerant out of your C3500’s A/C system — and lets outside moisture get in, which can take a toll on internal A/C components.
Does the A/C in my C3500 use gas? Your C3500’s A/C uses some power from the engine to run. So, while your air conditioning system may not directly use gasoline as a fuel source, using the A/C can indirectly affect your vehicle’s fuel efficiency.
My C3500’s A/C smells like vinegar! What can cause that? If the air conditioning in your C3500 smells like vinegar, it could be due to bacteria growth on system components such as the evaporator and heater cores. Bacteria can grow when moisture accumulates on air conditioning system components, providing a breeding ground for microorganisms.
Why won’t my C3500’s A/C cool the vehicle when the car is stopped? There could be issues with one or more components in the air conditioning or electrical system. Your C3500 may have a faulty cooling fan or low refrigerant.
Who repairs C3500 A/C near me? Firestone Complete Auto Care inspects and repairs C3500 air conditioning systems. Book an appointment at one of our A/C repair shops near you today.